"You'd better not fuckin' come," he growled, fingers playing with the silicon string.

Bones took his time. It was a new experience for him, pulling on the string and watching as the balls slowly popped out, stretching Kirk's ass with each slow tug, his own breath catching each time, the dildo in his own ass warming and stretching him.

His mouth swallowed Jim's cock between each ball coming out, a slow down and up - it wasn't Bones' intention for Kirk to come anytime soon.